CN112427195A - Adjustable inner tube spraying device - Google Patents
Adjustable inner tube spraying device Download PDFInfo
- Publication number
- CN112427195A CN112427195A CN202011315299.1A CN202011315299A CN112427195A CN 112427195 A CN112427195 A CN 112427195A CN 202011315299 A CN202011315299 A CN 202011315299A CN 112427195 A CN112427195 A CN 112427195A
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- Prior art keywords
- rod
- gear
- motor
- side wall
- block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
- B05B13/0645—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies the hollow bodies being rotated during treatment operation
- B05B13/0663—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies the hollow bodies being rotated during treatment operation and the hollow bodies being translated in a direction parallel to the rotational axis
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Abstract
The invention is suitable for the field of pipe fitting spraying, and provides an adjustable inner pipe spraying device, which comprises: the supporting seat is installed at the bottom of the bottom plate, the case is installed above the bottom plate, the intermittent rotating device is installed on the side portion of the case, a threaded rod is fixedly installed on the intermittent rotating device, one end, far away from the intermittent rotating device, of the threaded rod is connected with a side wall bearing, far away from the intermittent rotating device, of the case, a threaded block is sleeved on the threaded rod, a fixing device is installed on the threaded block, and a pipe fitting is arranged inside the fixing device; the coating box is fixedly mounted on the side wall of the machine case, the device is refitted by the fixing device, so that the device can be suitable for pipes of various specifications, the applicability of the device is wider, the pipes can be driven to advance in an equidistance mode without intermittence through the intermittent rotating device, the spraying effect inside the pipe fitting can be more uniform, and the spraying density is the same.
Description
Technical Field
The invention belongs to the field of pipe fitting spraying, and particularly relates to an adjustable inner pipe spraying device.
Background
Tubing is the material used to make pipe fittings. Different pipes are used for different pipe fittings, and the quality of the pipes directly determines the quality of the pipe fittings. The multipurpose pipe for building engineering, power plants, chemical plants and the like has an execution standard GB/T5310; for high-pressure boilers: the execution standard GB/T8163; seamless steel pipe for transporting fluid: there is an implementation standard GB 3087; seamless steel pipe for low pressure boiler: has an execution standard GB/T9948; seamless steel pipe for petroleum cracking: has an execution standard GB/T14976; stainless seamless steel pipe for fluid transportation is made of alloy (15 CrMo, 12Cr1 MoV) carbon steel (10 #, 20#, 45 #) stainless steel (304, 316). The method comprises the following steps: PPR pipe, PVC pipe, UPVC pipe, copper pipe, steel pipe, fibre pipe, compound pipe, galvanized pipe, hose, reducing pipe, water pipe.
In the in-process of processing is carried out to the pipe fitting, often need carry out the coating spraying to the inner wall of pipe fitting, and current inner tube spraying device is when the tubular product of different diameters is faced on the one hand, often need change different fixing device, adapt to different tubular products, very big inconvenience has been brought for work, and simultaneously, when carrying out the spraying operation, need equidistant constantly remove tubular product, come to carry out the spraying to each position of tubular product inside, and manual movement is difficult to guarantee at the uniform velocity, can lead to pipe fitting inside spraying density to differ, lead to the spraying effect poor.
Disclosure of Invention
The embodiment of the invention aims to provide an adjustable inner pipe spraying device, and aims to solve the problems that on one hand, when the existing inner pipe spraying device faces pipes with different diameters, different fixing devices are often required to be replaced to adapt to different pipes, so that great inconvenience is brought to work, meanwhile, when the spraying operation is carried out, the pipes are required to be moved constantly at equal intervals to spray various parts inside the pipes, the uniform speed is difficult to ensure due to manual movement, the spraying density inside the pipes is possibly different, and the spraying effect is poor.
The embodiment of the invention is realized in such a way that the adjustable inner pipe spraying device comprises: the supporting seat is installed at the bottom of the bottom plate, the case is installed above the bottom plate, the intermittent rotating device is installed on the side portion of the case, a threaded rod is fixedly installed on the intermittent rotating device, one end, far away from the intermittent rotating device, of the threaded rod is connected with a side wall bearing, far away from the intermittent rotating device, of the case, a threaded block is sleeved on the threaded rod, a fixing device is installed on the threaded block, and a pipe fitting is arranged inside the fixing device; the paint spraying machine is characterized in that a paint box is fixedly mounted on the side wall of the machine case, a pump body is mounted inside the paint box, a spray rod is connected to the pump body, a spray head is mounted at one end, far away from the paint box, of the spray rod, and the spray rod and the spray head are matched with a pipe fitting.
Preferably, the intermittent rotation device comprises a first motor, the first motor is fixedly mounted on the side wall of the inside of the case, a first connecting rod is fixedly mounted on the first motor, and a second connecting rod is hinged to the first connecting rod; the improved motor case is characterized in that a first supporting rod is connected to the side wall of the same side of the first motor through a bearing, a first rotary disc is fixedly mounted at one end, far away from the side wall of the case, of the first supporting rod, a linkage tooth is mounted on the side wall of the first rotary disc, the middle of the first rotary disc is fixedly connected with a threaded rod, a connecting block is arranged between the first rotary disc and the second connecting rod, a first connecting groove and a second connecting groove are formed in two sides of the connecting block respectively, the side wall of the first connecting groove is hinged to the middle of the first rotary disc, the side wall of the second connecting groove is hinged to the second connecting rod, a control groove is formed in the connecting block, a spring is mounted on the inner wall of the control groove, a movable plate is mounted on the spring, connecting rods are fixedly mounted at two ends of the movable plate, a linkage column.
Preferably, the length of the interlocking column is greater than the thickness of the interlocking tooth.
Preferably, when the linkage column is in contact with the linkage tooth inclined plane and does not extrude the spring, the spring is perpendicular to the linkage tooth inclined plane.
Preferably, the fixing device comprises a supporting plate, the supporting plate is fixedly connected with the thread block, a through hole is formed in the middle of the supporting plate, grooves are symmetrically formed in the supporting plate at two sides of the through hole, a second supporting rod is installed inside the grooves, a second motor is installed on the second supporting rod, and first gears are installed at two sides of the second motor; a first supporting table is arranged above the supporting plate and positioned on two sides of the second motor, a first rotating rod is connected to the inner bearing of the first supporting table, a second gear is arranged at one end, close to the second motor, of the first rotating rod, the first gear is meshed with the second gear, and a first trapezoidal gear is fixedly arranged at one end, far away from the second motor, of the first rotating rod; the upper bearing of the supporting plate is connected with a second rotary rod, a second trapezoidal gear and a third trapezoidal gear are fixedly mounted on the second rotary rod, a third supporting rod is fixedly mounted on the supporting plate, the upper bearing of the third supporting rod is connected with the third gear, a fourth trapezoidal gear is fixedly mounted in the middle of the third gear, and the fourth trapezoidal gear is meshed with the third trapezoidal gear; the supporting plate is fixedly mounted above the main control plate, a first sliding groove is formed in the main control plate, a sliding block is arranged inside the first sliding groove, a rack is mounted at the bottom of the sliding block and meshed with a third gear, a connecting block is mounted on the side portion of the sliding block, and a fixing plate is mounted on the connecting block.
Preferably, the distance between the third support bars is greater than the diameter of the through hole.
Preferably, a second sliding groove is installed above the bottom plate, a guide block is arranged inside the second sliding groove, a control rod is installed above the guide block, and the control rod is fixedly connected with the thread block.
The adjustable inner pipe spraying device provided by the embodiment of the invention has the following beneficial effects:
the device makes the device be applicable to the tubular product of various different specifications through reequiping fixing device, makes the suitability of device more extensive, and the drive tubular product equidistance that can not intermittent type formula simultaneously through intermittent type rotary device gos forward, makes the device can make the inside spraying effect of pipe fitting more unified, and spraying density is the same.
Drawings
Fig. 1 is a schematic structural diagram of an adjustable inner tube spraying device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an intermittent rotating device of an adjustable inner pipe spraying device according to an embodiment of the present invention;
fig. 3 is a three-dimensional structure diagram of a linkage column of an intermittent rotating device of an adjustable inner tube spraying device provided by an embodiment of the invention;
FIG. 4 is a top view of an adjustable inner tube spray coating device fixture according to an embodiment of the present invention;
FIG. 5 is a front view of an adjustable inner tube spray coating device fixture provided in accordance with an embodiment of the present invention;
fig. 6 is a side view of an adjustable inner tube spray coating device fixture according to an embodiment of the present invention.
In the drawings: 1. a base plate; 2. a supporting seat; 3. a chassis; 4. an intermittent rotation device; 41. a first motor; 42. a first link; 43. a second link; 44. a first support bar; 45. a first turntable; 46. a linkage tooth; 47. a first connecting groove; 48. a second connecting groove; 49. a control slot; 410. a spring; 411. moving the plate; 412. a connecting rod; 413. a linkage column; 414. connecting blocks; 5. a threaded rod; 6. a thread block; 7. a fixing device; 71. a support plate; 72. a through hole; 73. a groove; 74. a second support bar; 75. a second motor; 76. a first gear; 77. a first support table; 78. a first rotating rod; 79. a second gear; 710. a first trapezoidal gear; 711. a second rotating rod; 712. a second trapezoidal gear; 713. a third trapezoidal gear; 714. a third support bar; 715. a third gear; 716. a fourth trapezoidal gear; 717. a main control board; 718. a first chute; 719. a slider; 720. a rack; 721. connecting blocks; 722. a fixing plate; 8. a pipe fitting; 9. a paint tank; 10. a pump body; 11. a spray rod; 12. a spray head; 13. a second chute; 14. a guide block; 15. a control lever.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, in the embodiment of the present invention, the method includes: the device comprises a bottom plate 1, wherein a supporting seat 2 is installed at the bottom of the bottom plate 1, a case 3 is installed above the bottom plate 1, an intermittent rotating device 4 is installed on the side portion of the case 3, a threaded rod 5 is fixedly installed on the intermittent rotating device 4, one end, far away from the intermittent rotating device 4, of the threaded rod 5 is connected with a side wall bearing on one side, far away from the intermittent rotating device 4, of the case 3, a threaded block 6 is sleeved on the threaded rod 5, a fixing device 7 is installed on the threaded block 6, and a pipe fitting 8 is arranged inside the fixing device 7; the paint spraying machine is characterized in that a paint tank 9 is fixedly mounted on the side wall of the machine case 3, a pump body 10 is mounted inside the paint tank 9, a spray rod 11 is connected onto the pump body 10, a spray head 12 is mounted at one end, far away from the paint tank 9, of the spray rod 11, and the spray rod 11 and the spray head 12 are matched with the pipe fitting 8.
During the use, fix pipe fitting 8 through fixing device 7 to with spray lance 11 and shower nozzle 12 deepening spray tube 11 inside, start the pump body 10, extract coating and spray on 8 inner walls of pipe fitting, start intermittent type rotary device 4 simultaneously, drive pipe fitting 8 and progressively remove, in order to realize evenly spouting the effect of material.
As shown in fig. 2 and 3, in the embodiment of the present invention, the intermittent rotation device 4 includes a first motor 41, the first motor 41 is fixedly installed on the inner side wall of the cabinet 3, a first link 42 is fixedly installed on the first motor 41, and a second link 43 is hinged on the first link 42; a first supporting rod 44 is connected to the inner wall of the case 3 through a bearing on the side wall on the same side as the first motor 41, a first rotating disc 45 is fixedly mounted at one end of the first supporting rod 44 far away from the side wall of the case 3, a connecting tooth 46 is mounted on the side wall of the first rotating disc 45, the middle part of the first rotating disc 45 is fixedly connected with a threaded rod 5, a connecting block 414 is arranged between the first rotating disc 45 and the second connecting rod 43, a first connecting groove 47 and a second connecting groove 48 are respectively formed in two sides of the connecting block 414, the side wall of the first connecting groove 47 is hinged to the middle part of the first rotating disc 45, the side wall of the second connecting groove 48 is hinged to the second connecting rod 43, a control groove 49 is formed in the connecting block 414, a spring 410 is mounted on the inner wall of the control groove 49, a moving plate 411 is mounted on the spring 410, connecting rods 412 are fixedly mounted at two ends of the moving, the interlocking column 413 is engaged with the interlocking teeth 46.
During the use, start first motor 41, first motor 41 can drive connecting block 414 swing through first connecting rod 42 and second connecting rod 43, when connecting block 414 clockwise rotation, linkage post 413 always contacts with the inclined plane of interlock tooth 46, and compression spring 410 makes first carousel 45 can not rotate, when connecting block 414 anticlockwise rotation, linkage post 413 contacts with the straight face of interlock tooth 46, and the pulling is rotatory to link tooth 46, and then drive first carousel 45 anticlockwise rotation, and drive threaded rod 5 is rotatory, and then drive threaded block 6 and remove on threaded rod 5, and drive pipe fitting 8 through fixing device 7 and remove.
In the embodiment of the present invention, the length of the linking column 413 is greater than the thickness of the linking tooth 46, so as to prevent the linking column 413 from being too short to contact with the linking tooth 46.
In the embodiment of the present invention, when the linking column 413 contacts with the inclined plane of the linking tooth 46 and the spring 410 is not pressed, the spring 410 is perpendicular to the inclined plane of the linking tooth 46, so that when the linking column 413 contacts with the inclined plane of the linking tooth 46, the spring 410 can be compressed, and the linking column 413 does not push the first rotating disc 45 to rotate through the linking tooth 46.
As shown in fig. 4 to 6, in the embodiment of the present invention, the fixing device 7 includes a supporting plate 71, the supporting plate 71 is fixedly connected to the screw block 6, a through hole 72 is formed in the middle of the supporting plate 71, grooves 73 are symmetrically formed on the supporting plate 71 at two sides of the through hole 72, a second supporting rod 74 is installed inside the groove 73, a second motor 75 is installed on the second supporting rod 74, and first gears 76 are installed at two sides of the second motor 75; a first supporting platform 77 is arranged above the supporting plate 71 and positioned at two sides of the second motor 75, a first rotating rod 78 is connected to the inner bearing of the first supporting platform 77, a second gear 79 is arranged at one end, close to the second motor 75, of the first rotating rod 78, the first gear 76 is meshed with the second gear 79, and a first trapezoidal gear 710 is fixedly arranged at one end, far away from the second motor 75, of the first rotating rod 78; a second rotating rod 711 is in bearing connection with the supporting plate 71, a second trapezoidal gear 712 and a third trapezoidal gear 713 are fixedly mounted on the second rotating rod 711, a third supporting rod 714 is fixedly mounted on the supporting plate 71, a third gear 715 is in bearing connection with the third supporting rod 714, a fourth trapezoidal gear 716 is fixedly mounted in the middle of the third gear 715, and the fourth trapezoidal gear 716 is meshed with the third trapezoidal gear 713; a main control board 717 is fixedly mounted above the supporting plate 71, a first sliding groove 718 is formed in the main control board 717, a sliding block 719 is arranged inside the first sliding groove 718, a rack 720 is mounted at the bottom of the sliding block 719, the rack 720 is meshed with a third gear 715, a connecting block 721 is mounted on the side of the sliding block 719, and a fixing plate 722 is mounted on the connecting block 721.
When the pipe fitting clamping device is used, the second motor 75 is started, the second motor 75 drives the first gear 76 to rotate, the first trapezoidal gear 710 is driven to rotate through the second gear 79 and the first rotating rod 78, the third trapezoidal gear 713 is driven to rotate through the second trapezoidal gear 712 and the second rotating rod 711, the third gear 715 is driven to rotate through the fourth trapezoidal gear 716, the third gear 715 drives the sliding block 719 to move through the rack 720, and the pipe fitting 8 is clamped and fixed through the fixing plate 722.
In the embodiment of the present invention, the distance between the third support rods 714 is larger than the diameter of the through hole 72, so as to ensure that the third support rods 714 do not contact with the pipe 8 when the device is used for fixing the pipe 8, which may cause the movement path of the pipe 8 to be blocked or cause abrasion to the surface of the pipe 8.
In the embodiment of the present invention, a second sliding chute 13 is installed above the bottom plate 1, a guide block 14 is installed inside the second sliding chute 13, a control rod 15 is installed above the guide block 14, the control rod 15 is fixedly connected with the thread block 6, and the guide block 14 and the control rod 15 can limit the displacement of the thread block 6, so that the thread block 6 can only move in the horizontal direction, and cannot rotate during the movement.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. An adjustable inner tube spray coating device comprising: the bottom plate (1) is characterized in that a supporting seat (2) is installed at the bottom of the bottom plate (1), a case (3) is installed above the bottom plate (1), an intermittent rotation device (4) is installed on the side portion of the case (3), a threaded rod (5) is fixedly installed on the intermittent rotation device (4), one end, far away from the intermittent rotation device (4), of the threaded rod (5) is connected with a side wall bearing on one side, far away from the intermittent rotation device (4), of the case (3), a threaded block (6) is sleeved on the threaded rod (5), a fixing device (7) is installed on the threaded block (6), and a pipe fitting (8) is arranged inside the fixing device (7); fixed mounting has on quick-witted case (3) lateral wall scribbles workbin (9), scribble workbin (9) internally mounted has pump body (10), be connected with spray lance (11) on the pump body (10), keep away from the one end of scribbling workbin (9) on spray lance (11) and install shower nozzle (12), spray lance (11) and shower nozzle (12) cooperate with pipe fitting (8).
2. The adjustable inner pipe spraying device according to claim 1, wherein the intermittent rotating device (4) comprises a first motor (41), the first motor (41) is fixedly installed on the inner side wall of the machine box (3), a first connecting rod (42) is fixedly installed on the first motor (41), and a second connecting rod (43) is hinged on the first connecting rod (42); the inner wall of the case (3) is connected with a first supporting rod (44) through a bearing on the side wall on the same side with the first motor (41), a first rotating disc (45) is fixedly arranged at one end, far away from the side wall of the case (3), of the first supporting rod (44), a connecting tooth (46) is arranged on the side wall of the first rotating disc (45), the middle of the first rotating disc (45) is fixedly connected with a threaded rod (5), a connecting block (414) is arranged between the first rotating disc (45) and a second connecting rod (43), a first connecting groove (47) and a second connecting groove (48) are respectively arranged on two sides of the connecting block (414), the side wall of the first connecting groove (47) is hinged with the middle of the first rotating disc (45), the side wall of the second connecting groove (48) is hinged with the second connecting rod (43), a control groove (49) is arranged inside the connecting block (414), and a spring (410) is arranged on the inner wall of the control groove (, install movable plate (411) on spring (410), movable plate (411) both ends fixed mounting has connecting rod (412), the bearing is connected with linkage post (413) between connecting rod (412), linkage post (413) cooperate with linkage tooth (46).
3. The adjustable inner tube spray coating device according to claim 2, characterized in that the length of the linkage post (413) is greater than the thickness of the linkage teeth (46).
4. The adjustable inner tube spray coating device according to claim 2, characterized in that the linkage post (413) is in contact with the inclined surface of the linkage tooth (46) and the spring (410) is not pressed, and the spring (410) is perpendicular to the inclined surface of the linkage tooth (46).
5. The adjustable inner pipe spraying device according to claim 1, wherein the fixing device (7) comprises a support plate (71), the support plate (71) is fixedly connected with the thread block (6), a through hole (72) is formed in the middle of the support plate (71), grooves (73) are symmetrically formed in two sides of the through hole (72) on the support plate (71), a second support rod (74) is installed inside the grooves (73), a second motor (75) is installed on the second support rod (74), and first gears (76) are installed on two sides of the second motor (75); a first supporting platform (77) is arranged above the supporting plate (71) and positioned on two sides of the second motor (75), a first rotating rod (78) is connected to the inner bearing of the first supporting platform (77), a second gear (79) is arranged at one end, close to the second motor (75), of the first rotating rod (78), the first gear (76) is meshed with the second gear (79), and a first trapezoidal gear (710) is fixedly arranged at one end, far away from the second motor (75), of the first rotating rod (78); a second rotating rod (711) is in bearing connection with the supporting plate (71), a second trapezoidal gear (712) and a third trapezoidal gear (713) are fixedly mounted on the second rotating rod (711), a third supporting rod (714) is fixedly mounted on the supporting plate (71), a third gear (715) is in bearing connection with the third supporting rod (714), a fourth trapezoidal gear (716) is fixedly mounted in the middle of the third gear (715), and the fourth trapezoidal gear (716) is meshed with the third trapezoidal gear (713); the utility model discloses a gear rack, including backup pad (71), top fixed mounting has main control board (717), main control board (717) are gone up to open has first spout (718), inside slider (719) that is equipped with of first spout (718), rack (720) are installed to slider (719) bottom, rack (720) mesh mutually with third gear (715), connecting block (721) are installed to slider (719) lateral part, install fixed plate (722) on connecting block (721).
6. The adjustable inner tube spray coating device according to claim 5, characterized in that the distance between the third support bars (714) is larger than the diameter of the through hole (72).
7. The adjustable inner pipe spraying device according to claim 1, characterized in that a second sliding chute (13) is installed above the bottom plate (1), a guide block (14) is arranged inside the second sliding chute (13), a control rod (15) is installed above the guide block (14), and the control rod (15) is fixedly connected with the thread block (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011315299.1A CN112427195A (en) | 2020-11-20 | 2020-11-20 | Adjustable inner tube spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011315299.1A CN112427195A (en) | 2020-11-20 | 2020-11-20 | Adjustable inner tube spraying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112427195A true CN112427195A (en) | 2021-03-02 |
Family
ID=74693450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011315299.1A Withdrawn CN112427195A (en) | 2020-11-20 | 2020-11-20 | Adjustable inner tube spraying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112427195A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113663845A (en) * | 2021-09-14 | 2021-11-19 | 兴三星云科技有限公司 | Surface treatment device for hardware processing |
| CN114231888A (en) * | 2021-12-15 | 2022-03-25 | 无锡进源科技开发有限公司 | Thermal spraying equipment for spraying inner wall of workpiece |
-
2020
- 2020-11-20 CN CN202011315299.1A patent/CN112427195A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113663845A (en) * | 2021-09-14 | 2021-11-19 | 兴三星云科技有限公司 | Surface treatment device for hardware processing |
| CN114231888A (en) * | 2021-12-15 | 2022-03-25 | 无锡进源科技开发有限公司 | Thermal spraying equipment for spraying inner wall of workpiece |
| CN114231888B (en) * | 2021-12-15 | 2023-09-12 | 无锡进源科技开发有限公司 | Thermal spraying equipment for spraying inner wall of workpiece |
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Application publication date: 20210302 |